Unwinder



F. M. JOSLIN.

UNWINDER.

APPLICATION FILED MAR. 29, 1920.

1,412,529. Patented Apr.11,1922.

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, I anvenfot D q vifweoo 23 E 7 70 E0 6/ F. M. JOSUN.

UNWINDER.

APPLICATION FILED MAR. 29 I920.

Patented Apr. 11, 1922.

3 SHEETS-SHEET 2.

Gtbowmt,

F. M. JOSLIN.

UNWINDER.

APPLICATION FILED MAR, 29, I920.

Patented Apr. 11, 1922.

3 SHEETS-SHEET 3.

\? L llnm W m R UNITED STATES PATENT OFFICE.

FBANKM. JOSLIN, AMSTERDAM, NEW YORK, ASSIGNOR T INMAN MANUFAC- TURING COMPANY, INC.,'OF AMSTERDAM, NEW YORK, A CORPORATION, OF NEW YORK.

UNWINDER.

Specification of Letters Patent.

Patented Apr. 11, 1922.

Application filed March 29, 1920. Serial No. 369,488.

This'invention relates to frictional gear mechanism adapted particularly for driving the unwinding roll of a machine employed for unwinding a web of material such as paper, cloth, or the like from a roll.

The present invention embodies certain improvements over the construction of my 'pr'ior Patent No. 1251784. The object of this invention. is to provide a friction gear mechanism of the kind mentioned in which one of the friction disks for driving the roll is caused to yieldingly bear against the other thereby compensating for any wear between such disks and in which the fricnon-disk which is directly connected to the roll is operated by a plurality of other disks movable over the face of the first mentioned disk to vary the speed of the roll, means being rovided for rotating said pluralityof dis s at different predetermined speeds. By such means the rate at which the material is unwound may be closely and accurately controlled through wide limits so that it maybe fed at the speed at which it is desired to use the same.

The invention also contemplates certain improvements in the details of the mechanism by which the above mentioned results arejacconiplished.

v The inventionin one specific form is set forth the anneXedS-pecifi'cation and is represented in the accompanying drawings, in which I H l'figi 1 isfa side elevation of the machine; Fig. 2" isa plan View of the same; parts being shown broken away; Fig. 3' anenlarg'ejdslde elevation of the central portion of the machine, parts appearing in section;

ingprincipally the mechanism for driving the unwinding roll, parts'being shown in 5 is'ian'ende'levaton, viewed fromthe left offthe portion of the machine shown in ig. as an end ele'v ation viewed from the Fig-14's an enlarged view illustratright of the portion of the machine shown in Figure 3, parts being omitted.

Referring to the drawings in detail, A, A represents two members which are rigidly secured together in spaced relation formin a framework upon which are mounted standards for supporting the various parts of the mechanism. A shaft 10 is journaller in certain of said standards B. C. D this shaft constituting the source of power from which the mechanism of the present ma chine is driven. It is to be understood that this shaft is driven from the machine to which the present mechanism is intended to supply the material or, as is evident, said shaft may be driven from any suitable source of power. The shaft 10 extends along the side of the machine of the present invention and at one end thereof between the standards C and D gear mechanism is slidably mounted thereon but by any suitable means is caused to rotate therewith. This gear mechanism comprises three gear wheels 11*,11 and 11 which are different in size and which are suitably secured together and adapted to mesh with otlm' gears 12, 12 and 12 mounted upon a shaft 13 secured in said s'upportsB, C and D adjacent the shaft 10. A. handle 14 is provided bywhich said gear wheels may be shifted, this handle being provided with a suitable projection 14" adapted to enter recesses 15, 1'5 and 15? in a plate15 rigidly mounted on a "fixed part of themachine frame adjacent the position of said handle 14;. It is to be understood that when the gear mechanism is shifted to different positions to cause different sets of gear wheels to mesh. the shaft l3will be driven at different rates of speed. The shaft 13 is provided with a gear wheel "16 which meshes with the gear wheel 18 se cured to a hollow shaft 19' loosely mounted on the shaft 10. on the shaft 19 there is mounted a slidable friction disk 20, said disk being prevented from rotation relative to the shaft by means of the feather 21. The shaft 13 is also provided with a gear wheel22 which cooperates with a gear wheel 23 secured to a short shaft 2-1 suitably supported in the standard B of the machine. The shaft 24 carries a second gear 25 which meshes with a gear 26, this latter gear being secured toa hollow shaft 27 which is also rotatably mounted on the shaft 10. On the shaft 27 there is also slidably mounted a friction disk 28, which disk is held from rotation relative to the shaft 27 by means of feather 22).

Means are provided for moving the friction disks 20 and 28 toward each other, this means comprising a shaft 30 mounted in standards B, C, 1), and provided with a handle 31 by which it may be rotated. The shaft 30 includes two threaded parts secured together, one part containing right hand and the other left hand threads, said threaded parts of the shaft 30 engaging in two thread ed-members 32 and 33 so that as said shaft is rotated, said members 32 and 33 will be caused to move toward each other. The said members 32 and 33 carry arms 34 and 35 which rotatably engage hubs on the friction disks 20 and 28 heretofore referred to- From this construction it follows that as the shaft 30 is rotated by means of the handle 31, the

friction disks 20 and 28 will be caused to move toward each other upon their respective shafts 19 and 27. A clamping device 30 is provided for securing the shaft 30 against rotation such clamping device comprising a bolt, passing through the parts of the bearing of shaft 30 in standard D and having a nut to which an operatinghandle is secured.

A friction disk 36 is provided for cooperating with the friction disks 20 and 28, said friction disk 36 constituting means by which the unwinding roll 37 is driven. This roll 37 is provided at one end with a shaft or projecting portion 38 journalled in the stand ard E of the machine and the friction disk 36 carries a hub portion 39 which is slidably mounted upon the part 38. but which is pro vented from rotation relative thereto by any suitable means. At its other end the roll 37 is journalled in the standard F of the machine. A coiled spring 40 surrounds the part 38 and the hub 39. which spring tends to constantly urge the friction disk 36 against the friction disks 20 and 28.

The roll 37 constitutes what is termed the unwinding roll, since in connection with the roll 41 also journalled in standards E- and F. it constitutes the means by which the mate rial is drawn or unwound from the source of supply. It is to be understood that the roll a1 is not driven, but is merely a presser roll held against the roll .3? in any suitable manner.

Means are provided for supporting the material to be unwound, which is generally in the form of a roll, such means comprising standards G secured to the framework of the machine, the roll of material being mounted in such standards as shown in dotted lines in Figure 1. Suitable guide rolls such as 42 may be provided for directing the material during its travel from the supply to the unwinding roll and after passing such roll, a.

suitable tensioning roll such as as mounted machine in which it is to be used.

Briefly describing the operation of the mechanism, it will be understood that the material to be unwound is in the form of a roll suchas shown in dotted lines in Figure 1 of the drawings, or in any other suitable form, such roll being supported in any suit able manner. The material is drawn from the supply by means. of the rolls 37 and t1. the latter of which is driven through the medium of the disks 20, 2S and 36. The roll .37 may be driven at different speeds by means of the movable gear wheels 11, 11", 11 and the cooperating gearwheels 12, 12, 12. These gears afford means by which three difierent speeds of the driving disks 20 and 28 may be obtained, resulting in three different speeds of rotation of the roll 37. By adjusting the disks 20 and 28 with reference to disk 36 through the medium of shaft 30, further adjustment of the speed of rotation of the roll 37 may be effected. After thedesired speed of rotation of roll 37 has been obtained, the disks 20 and 28 may be locked in position by means of the clamping mechanism 30 cooperating with the shaft 30.

It is apparent that the invention is capable of embodiment in different forms from that described, and it is not to be understood that the same is intended to be limited to the specific construction herein set forth.

What I claim as my invention and desire to secure by Letters Patent is: v

1. In a machine of the kind described, a roll, a friction disk operatively connected thereto, a plurality of shiftable friction disks for driving said firstvnamed disk, means for driving said plurality of disks at a plurality of different predetermined speeds, and means for simultaneously shifting-said shiftable disks relative to the first named disk.

2. In a machine of the kind described, a roll having a disk non-rotatably mounted thereon, two secondarvdisks supported adjacent said first named disk and arranged to contact with said first named disk and slide over the same toward and from the .center thereof, mechanism for drivingsaid secondary disks at a plurality of predeterminet 7 speeds. and means for simultaneously mov ing saidsecondarv disks over the face of .said first nameddisk to vary the. speed at;

which said roll is driven by-said mechanism.

In a machine of the kind described, a roll having a disk non-rotatably mounted thereon, two secondary disks supported adjacent said first named disk and arranged to contact with said first named disk and slide over the same toward and from t-hecenter thereof, mechanism for driving said secondary disksat a plurality of predetermined speeds, means for simultaneously moving said secondary disks over the face of said first named disk to vary the speed at which said roll is driven by said mechanism, and means for yieldingly pressing said firstnamed disk against said secondary disks.

4. In a machine of the kind described, a roll having a disk non-rotatably mounted thereon, a shaft extending transversally past the face of said disk, two secondary disks slidably mounted on said shaft and arranged to contact with said first named disk and a slide over the same toward and from the center thereof, mechanism for driving said secondary disks at a plurality of predetermined speeds, and means for simultaneously moving the said secondary disks alongsaid shaft toward or from the, center of said first named disk to vary the speed at which said roll is driven by said mechanism.

5. In a machine of the kind described, a roll having a disk non-rotatably mounted thereon, a shaft extending transversally pastthe face of said disk, two secondary disks slidably mounted on said shaft and arranged to contact with said first named disk and slide over the same toward and from the center thereof, change-speed gear mechanism adapted to be rotated by said shaft and operatively connected to said secondary disks for driving the same at a plurality of predetermined speeds, and means for simultaneously moving said secondary disks over the face of said first named disk to vary the speed at which said roll is driven bv said gear mechanism.

6. In a machine of the kind described, a roll having a disk non-rotatably mounted thereon, a shaft extending transversally past the face of said disk, two secondary disks slidably mounted on said shaft and arranged to contact with said first named disk and slide over the same toward and from the center thereof, change-speed gear mechanism adapted to be rotated by said shaft. and operatively connected to said secondary disks for driving the same at a plurality of predetermined speeds, means for simultaneously moving said secondary disks over the face of said first named disk to vary the speed at which said roll is driven by said gear mechanism, and means for yieldingly pressing said first named disk against said secondary disks.

In testimony whereof I aflix my signature FRANK M. J OSLIN. 

